7u=4+8u

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Solution for 7u=4+8u equation: 



7u=4+8u

We move all terms to the left:

7u-(4+8u)=0

We add all the numbers together, and all the variables

7u-(8u+4)=0

We get rid of parentheses

7u-8u-4=0

We add all the numbers together, and all the variables

-1u-4=0

We move all terms containing u to the left, all other terms to the right

-u=4

u=4/-1

u=-4

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